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Differential Pressure Switches
NSA-DBL

Part Numbers

NSA-DBL-205B
NSA-DBL-205D
NSA-DBL-205E
NSA-DBL-205L
NSA-DBZ-06

The NSA-DBL Series Differential Pressure Switches are general purpose pressure switches designed for both HVAC and Energy Management applications. These pressure switches can be used to sense positive, negative, or differential air pressures when used in conjunction with an NSA-DBZ-06 DBL Series Duct Mount Kit.

Applications

Monitoring Filter Blockage, Proof of Flow, Prove Excessive or Insufficient Flow, Alarms and Control

Adjustable Set Point Range*:
Inch WC(Pa)
NSA-DBL-205B: 0.20 to 2.0 (50 to 500)
NSA-DBL-205D: 0.80 to 4.0 (200 to 1000)
NSA-DBL-205E: 2.0 to 10.0 (500 to 2500)
NSA-DBL-205L: 0.08 to 0.8 (20 to 200)
Adjustable Set Point Switching Differential: Factory Default: +/- 15% of Trip / Set Point; Factory set switching differential is+ 15% of trip/setpoint. See ordering grid below for adjustable switching differential range.
Contact (Load) Rating: 250 VAC maximum, 1.0A Resistive (0.4A Inductive)
Contact Arrangement: SPDT (Form 1C) w/ Automatic Reset
Measured Media: Air and other non-combustible, non-aggressive gases
Diaphragm Material: Silicone
Maximum Operating Pressure: 40” wc (10 kPa)
Life Expectancy: NSA-AFS-222/NSA-AFS-262: Air or combustion by-products that will not degrade silicone | NSA-AFS-460: Air
Maximum Pressure: 0.5 PSI (0.03 Bar)
Life Expectancy: 1,000,000 cycles
Operating | Storage Temperature Range: -4 to 185ºF (-20 to 85ºC)
Mounting Direction: Any vertical plane
Enclosure Material: Base = PA6.6 / Cover = Polystyrene (Transparent)
Enclosure Rating: NEMA 3 (IP54)
Sample Line Connections: Accepts 3/16” ID (8mm) Push on plastic/poly tubing
Electrical Connections: Spade (Maximum 16 AWG (1.5 mm2))
Conduit Opening: Accepts ½” NPT Conduit
Agency Approvals: CE, ISO 9001, RoHS2, WEEE
Dimensions (Diameter x Height): 4.00” x 2.30” (100 x 58 mm)
Weight: 0.40 lbs (0.20 kg)

*The adjustable trip/setpoint within the control range is calibrated for vertical mounting position pressure, port connection pointing downwards. If mounted in horizontal position, deduct 0.08 inch WC (20 Pa) from desired setpoint for offset adjustment. If setpoint at the bottom of range, do not mount DBL in horizontal position.

Adjustable Set Point Range*:
Inch WC(Pa)
NSA-DBL-205B: 0.20 to 2.0 (50 to 500)
NSA-DBL-205D: 0.80 to 4.0 (200 to 1000)
NSA-DBL-205E: 2.0 to 10.0 (500 to 2500)
NSA-DBL-205L: 0.08 to 0.8 (20 to 200)
Adjustable Set Point Switching Differential: Factory Default: +/- 15% of Trip / Set Point; Factory set switching differential is+ 15% of trip/setpoint. See ordering grid below for adjustable switching differential range.
Contact (Load) Rating: 250 VAC maximum, 1.0A Resistive (0.4A Inductive)
Contact Arrangement: SPDT (Form 1C) w/ Automatic Reset
Measured Media: Air and other non-combustible, non-aggressive gases
Diaphragm Material: Silicone
Maximum Operating Pressure: 40” wc (10 kPa)
Life Expectancy: NSA-AFS-222/NSA-AFS-262: Air or combustion by-products that will not degrade silicone | NSA-AFS-460: Air
Maximum Pressure: 0.5 PSI (0.03 Bar)
Life Expectancy: 1,000,000 cycles
Operating | Storage Temperature Range: -4 to 185ºF (-20 to 85ºC)
Mounting Direction: Any vertical plane
Enclosure Material: Base = PA6.6 / Cover = Polystyrene (Transparent)
Enclosure Rating: NEMA 3 (IP54)
Sample Line Connections: Accepts 3/16” ID (8mm) Push on plastic/poly tubing
Electrical Connections: Spade (Maximum 16 AWG (1.5 mm2))
Conduit Opening: Accepts ½” NPT Conduit
Agency Approvals: CE, ISO 9001, RoHS2, WEEE
Dimensions (Diameter x Height): 4.00” x 2.30” (100 x 58 mm)
Weight: 0.40 lbs (0.20 kg)

*The adjustable trip/setpoint within the control range is calibrated for vertical mounting position pressure, port connection pointing downwards. If mounted in horizontal position, deduct 0.08 inch WC (20 Pa) from desired setpoint for offset adjustment. If setpoint at the bottom of range, do not mount DBL in horizontal position.